include/block/throttle-groups.h

   1 /*
   2  * QEMU block throttling group infrastructure
   3  *
   4  * Copyright (C) Nodalink, EURL. 2014
   5  * Copyright (C) Igalia, S.L. 2015
   6  *
   7  * Authors:
   8  *   Benoît Canet <benoit.canet@nodalink.com>
   9  *   Alberto Garcia <berto@igalia.com>
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License as
  13  * published by the Free Software Foundation; either version 2 or
  14  * (at your option) version 3 of the License.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  23  */
  24
  25 #ifndef THROTTLE_GROUPS_H
  26 #define THROTTLE_GROUPS_H
  27
  28 #include "qemu/throttle.h"
  29 #include "block/block_int.h"
  30
  31 const char *throttle_group_get_name(BlockBackend *blk);
  32
  33 ThrottleState *throttle_group_incref(const char *name);
  34 void throttle_group_unref(ThrottleState *ts);
  35
  36 void throttle_group_config(BlockBackend *blk, ThrottleConfig *cfg);
  37 void throttle_group_get_config(BlockBackend *blk, ThrottleConfig *cfg);
  38
  39 void throttle_group_register_blk(BlockBackend *blk, const char *groupname);
  40 void throttle_group_unregister_blk(BlockBackend *blk);
  41 void throttle_group_restart_blk(BlockBackend *blk);
  42
  43 void coroutine_fn throttle_group_co_io_limits_intercept(BlockBackend *blk,
  44                                                         unsigned int bytes,
  45                                                         bool is_write);
  46
  47 #endif